BIOSAND FILTER: AN ALTERNATIVE TO TREAT DRINKING WATER … fileBIOSAND FILTER: AN ALTERNATIVE TO...
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BIOSAND FILTER: AN ALTERNATIVE TO TREAT DRINKING WATER AT A HOUSEHOLD LEVEL Joann Marie Rodríguez PhD Student UMass Amherst EWRE
Transcript of BIOSAND FILTER: AN ALTERNATIVE TO TREAT DRINKING WATER … fileBIOSAND FILTER: AN ALTERNATIVE TO...
BIOSAND FILTER: AN ALTERNATIVE TO TREAT DRINKING WATER AT A
HOUSEHOLD LEVEL
Joann Marie Rodríguez PhD Student
UMass Amherst EWRE
Access to clean water
Access to clean water is “essential to the realization of all human rights”United Nations General Assembly under the Resolution 64/292
Intermittent Slow Sand Filter
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How to build a biosand filter?
How to build a biosand filter?
MEDIA Drainage Gravel6 - 12mm
SeparatingGravel1- 6mm
Filtration sand< 0.7 mm
• Find the medium:• Crushed rock• River sand
• Sieve
0.1 - 0.7mm
Depth : 1” Depth : ! ” Depth : 6 ”
DIFFUSER
Diffusor:
To prevent any disturbance sand surface
Material:
Corrugated PlasticPlasticMetal
Turbidity
Turbidity tube
cm NTU
6.7 240
7.3 200
8.9 150
11.5 100
17.9 50
20.4 40
25.5 30
33.1 21
35.6 19
38.2 17
40.7 15
43.3 14
45.8 13
48.3 12
50.9 11
53.4 10
85.4 5
Depth (cm)=244.13 (NTU)-0.662
